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Species · Sea squirts

Yellow sea-squirt, Tube sea-squirt, Sea vase

Ciona intestinalis

4,422Records since 2000
JunePeak month
36Counties with records

When it is recorded

Jan28
Feb61
Mar141
Apr139
May177
Jun1,495
Jul468
Aug695
Sep679
Oct316
Nov131
Dec58

GBIF records by month, 2000–2025 (all years combined).

Where it is recorded

#CountyNationRecordsShare
1Argyll and Bute Scotland134
2Highland Scotland106
3Ards and North Down Northern Ireland42
4Pembrokeshire Wales29
5Newry, Mourne and Down Northern Ireland24
6Sefton England22
7Plymouth England21
8Cornwall England18
9North Ayrshire Scotland16
10Dorset England15
11Suffolk England14
12Shetland Islands —13
13Brighton and Hove England10
14Gwynedd Wales8
15Orkney Islands Scotland8
738 England1,599 Scotland238 Wales248 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 36 counties in all.

About this species

Records since 2000
4,422
Peak month
June
Counties with records
36
Scientific name
Ciona intestinalis
Group
Sea squirts
NBN Atlas records since 2000
4,231
Most recorded in
Argyll and Bute, Highland
Kingdom
Animalia
Phylum
Chordata
Class
Ascidiacea
Order
Phlebobranchia
Family
Cionidae
Genus
Ciona
Name with authority
Ciona intestinalis (Linnaeus, 1767)
Described
1767
Contributing datasets
46

Sources: GBIF occurrence data (CC0 / CC BY), JNCC Taxon Designations (OGL), NBN Atlas (open licences), Wikidata (CC0) · Wikidata Q2567701 · GBIF 2329622